What are the metabolic demands on pregnancy?

Pregnancy significantly increases metabolic demands as the body supports fetal growth and development. There is an elevated energy requirement, with increased calorie intake needed to sustain the growing fetus, placenta, and maternal tissue changes. Additionally, hormonal changes enhance nutrient absorption and metabolism, while the body must also meet increased demands for vitamins and minerals, particularly folic acid, iron, and calcium. Overall, these metabolic adjustments are crucial for ensuring a healthy pregnancy and optimal fetal development.